Improved apparatus for cooling and saving charcoal



NAPETERS, PHOTD-LITHOGRAPMER. WASP NARETERS. PMOTO-LITHOGRAPMER.WASHINGTON, D CA aient @tithe GUSTAVUS JASPER, OF OHARLESTOWN,MASSACHUSETTS.

Leiters Paten Noylcipio, dated March 22, 1870.

IMPROVED APPARATUS FOR COOLING AND SAVING- CHARCOAL.

The Schedule referred to in these Letters Patent and making part of thesame.

Know all men by these presents.-

That I, GUs'rAvUs A. J AsPnR, an alien, now residing-in Charlestown, inthe State of Massachusetts, have invented certain new and` usefulImprovements in Apparatus for Cooling and Saving Charcoal, of which thefollowingl is a full and correct description, relfl'erence being had tothe accompanying drawings, in w ich- Figure l is a side elevation of theapparatus.

Figure 2 is an end view.

Figure 3 is a view from the opposite end.

Figure 4 is a vertical section of the cylinder, showing the internalshelves.

These improvements relate to that description of apparatus in which thecharcoal is cooled by forcing a current of air through it vwhileagitated by the revolution of a cylinder through which it is passing, orwhile otherwise in motion through a cooling-chamber; and consistsin`devices for rendering the current of air colder for withdrawing heatfrom the cylinder or chamber, and for collecting and saving thecharcoal-dust.

The invention consists also in various details of construction,hereinafter particularly set forth.

I proeed to describe the apparatus, including the improvements, as putinto successful operation by me.

A is a revolving cylinder made of boiler-iron, twenty feet'in length andfour feet in diameter, mounted, as shown in the drawings, uponfriction-rollers C, so that one end is lower than the other, andfurnished with internal shelves S, about two inches deep, as shown.

The heads of the cylinders D D do not revolve. They are supported byiron bands, which are secured to the top ofthe room, but which are notrepresented in the drawings.

Motion is given to the cylinder by a chainrnnning in the grooved ring O,rigidly attached to the cylinder and over a pulley on the mainl shaft X.

B is an ice-chest, open .at the top'- and connected with the cylinderthrough the lower fixed head, D, by the pipe or air-passage T.

E is a due leading from the upper head of the cyll inder, in which, atF, there is a fan to create a strong draught of air through theice-chest and cylinder.

G is a tunnel, through which the hot coal is introduced into tbecylinder.'

The hot coal is thrown from the wagons upon the platform I, whence it ishoisted to the tunnel by the endless chain of buckets, H.

The revolution of the cylinder and the shelves causes the charcoal topass slowly from the upper end of the cylinder to the other, whence itis discharged through the tunnel N into a proper receptacle, M. Duringits passage through the cylinder the charcoal is cooled by the action ofthe air rst-drawn through the ice-chest to make it cold, and thenthroughv the cylinder.

K is a water-pipe communicating with a cistern.

Along the bottom of theV pipe, over the cylinder, there are small holes,h h h, through which streams of water are constant-ly discharged uponthe cylinder, to draw from the cylinder the heat imparted to it by thehot charcoal within.

The water is caughtin a trough, V, placed under the cylinder, as shown.The trough is supported by the frames holding the friction-rollers. Ithas au outlet v.

bove the fan for about twenty-five feet the fine has a nearly horizontaldirection, inclining downward slightly, as shown.

Opening into this port-ion of the due are two small pipes, one awater-pipe, P, and the other a steampipe, Q. The' steam-pipe has anelbow within the line, as shown, and discharges a jet'of steam to meetthe current of air produced by the fan. The steam and the current of airmeeting, the dust contained in the latter is whirled or drops into thewater, which has entered from the pipe P and is flowing along the bottomof the line. This stream of water passes out through a discharge-pipe,J, carrying with it all the charcoal-dust within a cistern W. Thecurrent of air finally overpowers the stea1`n,and both are dischargedtogether into the open air throughthe mouth of the flue, which is aboveor beyond the steam-pipe, but both air and steam are free from dust. Thewater introduced into the due through the pipe I catches and carries olfdust independently of the steam; and a jet of steam introduced as above,without thewater, will collect upon the bottom of the due considerabledust, but in the latter case it is necessary to frequently clean out thedue.

The cistern NV has a series of partitions, each partition being a littleless in height than the preceding. The coarser charcoal-dust falls tothe bottom of the first compartment the next coarser tothe bottom of thenext, and so on till the water flowing out from the last leaves thereinthe nest of the dust.

The advantages derived from the use of the iccchest and the water-pipeK, as above described, cannot be overestimated. Before theseimprovements were added tothe apparatus the cylinder, after a short use,become so heated that so Inuch of the coolingpower of the air was spentin cooling the cylinder, iusteadl of the charcoal, as to render itnecessary to stop operations; and it was often necessary to send thecharcoal through the cylinder more than once, or to use more than onecooling apparatus. W'ith these improvements, however, the apparatus maybe kept iu constant use.' Ooal entering the cylinder just 'short of ared heat has, upon coming out, only ninety degrees of heat. One coolerwill do all the work of a sugarhouse of eighty tons per day capacity.

The fan in the flue takes'its motion from a pulley on the main shaft.Fans in flues or in pipes for creating adraught have heretofore had oneofthe journals supported within the flue. This journal was oiled the e,the journal became so heated that thefan ceased to operate. By makingtwo elbows in the ue,

y asshown at F, I am able to place the supports of both journals withoutthe ue, and avoid these diiculties.

I claim-'- 1. Cooling the current of `air which is to be drawn i throughthe cylinder or cooling-chamber, by first drawing it through anice-chest, substantially as. described, for the purpose specified.

2. Cooling the-revolving cylinder by water, substanstantially asdescribed, for the purpose specified.

3. Turning the stream of water from the pipe Pinto the ue to carry odust, substantially as described.

4. Directing the jet of steam against Athe current of 'fhe abovespecification of my said invention signed and witnessed at Boston this16th day of September,

GUSTAVUS A. JASPER.

Witnesses:

W. W. SWAN, H. FARNAM SMITH..

